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本帖最后由 yyj 于 2018-1-30 11:01 编辑 , Q7 B& B" v) C3 W
- [code]EDMA sample test application
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- * edma_test.c' {" J- H; S2 i; a B4 Z
- *& U. D0 P6 c: m! h
- * brief EDMA3 Test Application9 B. Q; F `( f4 ~: l
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- * This file contains EDMA3 Test code.
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4 ]+ f/ A( j$ q6 G, m) N2 R! \1 Z. ~ - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 g8 r, J* r' T$ } r" X9 Y
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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- *
5 ~" \: t' D$ N7 Q0 c7 G7 H2 D - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ g* i* @1 Y* l0 Y6 e8 b
- *- B1 x; \. U2 ^) G
- * This program is free software; you can redistribute it and/or% G$ _4 v/ X( |' ?( j0 d- D
- * modify it under the terms of the GNU General Public License as2 u( `: [$ ]' e% Q: ~. m' [# l
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any/ Q7 H/ _6 D7 {+ W
- * kind, whether express or implied; without even the implied warranty
" z" @) T2 u. y3 n1 L' Q9 s- F - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& K+ z4 \$ N6 B" ]( f5 l" P8 \
- * GNU General Public License for more details.
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) i6 C9 g9 N; B1 N- #include <linux/module.h>
% O1 ~% S6 }& f# m# O - #include <linux/init.h>- ~$ ?# L/ I2 o0 {* X1 N
- #include <linux/errno.h>
. B$ |* I- k. {7 Z - #include <linux/types.h>
4 T4 d. R% z, ^1 E* t$ D - #include <linux/interrupt.h>
5 C; O- W1 m# w+ p/ Z3 z5 D9 u( e0 F - #include <asm/io.h>
% m, I0 i0 |, Q$ e* H4 h - #include <linux/moduleparam.h>8 i' H) R- P/ z; d
- #include <linux/sysctl.h>
7 e# p" c6 B0 A0 F9 O. `) u - #include <linux/mm.h>: R0 @& `6 f2 C# X
- #include <linux/dma-mapping.h>$ L3 T- U; i/ _+ Z$ Y5 l# S
9 p. z% B. a; i( e9 G$ u- #include <mach/memory.h>
" n3 n& i8 S1 W5 z F - #include <mach/hardware.h>$ r$ q3 H. h% M" `8 v
- #include <mach/irqs.h>5 x9 @! G! O9 w& Y3 `
- #include <asm/hardware/edma.h>8 F, w S* R4 ?$ P( O' R
$ F0 {; v' x" D- #undef EDMA3_DEBUG
4 G* }7 a/ u, a* l( P8 t - /*#define EDMA3_DEBUG*/
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7 Y" q5 d6 U6 L/ T+ a- #ifdef EDMA3_DEBUG
, M& A" D8 A5 p8 j; U6 L - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 ]% S0 O. e" _3 v) ]* e
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 U9 I! M' [6 I' [
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)4 Y& b4 W* ^( r7 B; h4 Q
- #else* O, M) ]/ c5 m8 F1 x
- #define DMA_PRINTK( x... )$ K! \1 l/ f- y0 J6 K; b9 r) V
- #define DMA_FN_IN2 t& c# A+ e0 e# r& j6 {
- #define DMA_FN_OUT
3 P& U. d" o" Q/ W1 K0 }, u0 N - #endif' f3 C4 y; w6 C9 T! I4 h. v0 m$ e8 B
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
" f, G5 a3 Y7 a9 z! h - #define STATIC_SHIFT 3( d. J; [9 F! ]! S2 T) ^8 K/ c
- #define TCINTEN_SHIFT 20
& }/ M; |5 N" o( |1 E# N - #define ITCINTEN_SHIFT 21
! G- u( ^( A& C6 z - #define TCCHEN_SHIFT 22
, Y8 Z' {; h, m w - #define ITCCHEN_SHIFT 23
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! i2 }7 u1 e* u8 i! u% q9 E; p- static volatile int irqraised1 = 0;5 S A, W9 w$ v# e0 {! t1 h& S
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 v$ ~* }5 m8 P1 x; i9 S$ n/ ?" T
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& N) ?3 ]( k$ r: f0 c2 ]3 O" ` - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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+ b+ g j" K4 j# C0 d7 l# t- dma_addr_t dmaphyssrc1 = 0; i& B% Q4 z9 J2 P9 [
- dma_addr_t dmaphyssrc2 = 0;9 X9 j; o( M* L# L2 f7 p8 m7 p) K7 q% L
- dma_addr_t dmaphysdest1 = 0;
, j4 A0 {2 Y5 ^! f! _( n: a7 B - dma_addr_t dmaphysdest2 = 0;: E: t" W' H1 b) A7 U! \+ q9 V* [
; H1 r) U, w" H0 @6 {9 l; A. J; I! Z- char *dmabufsrc1 = NULL;
H6 S/ }( X. y/ S; D6 B+ C7 @ - char *dmabufsrc2 = NULL;% z3 q5 n6 V$ J& I5 R! d1 r
- char *dmabufdest1 = NULL;
7 [" d# r- Y/ [ - char *dmabufdest2 = NULL;
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2 F+ `: U" \$ Y" K. R6 Y- static int acnt = 512;
}, D( T4 I0 n! V - static int bcnt = 8;: h+ S/ g1 @1 i4 @1 H& G
- static int ccnt = 8;3 I* |7 Q' u4 ]* x) \7 S" ^ l
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- module_param(acnt, int, S_IRUGO);) h% j+ c4 [1 T$ ?
- module_param(bcnt, int, S_IRUGO);
* x8 G) I: J, V+ D t2 w( D - module_param(ccnt, int, S_IRUGO);
复制代码
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4 u! a6 D: {3 m; Q3 M* f7 z" ^ 这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用6 }% ?$ p0 A+ X$ I6 \
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。; J' I& ~# W+ g
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。; T; b0 [+ @% r' e+ {
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